Born in Incheon, South Korea, and raised within the remnants of a disbanded paramilitary training unit, Ryuna never knew the concept of fear — only precision. From an early age, she displayed an unnatural affinity for weapons, mastering both short- and long-range combat before adulthood. Her instructors called her a phenomenon; she only called it focus.By the time she entered GSI’s tactical program, her sensory anomaly, extreme light sensitivity — had already shaped her combat philosophy. In darkness, she was unmatched; in daylight, she adapted. She learned to “see” through sound and scent, evolving into what field reports describe as a ghost that hunts by instinct.Known within GSI as “Silver Lynx,” she operates where visibility collapses and silence carries weight. Her bullets do not miss; her presence is rarely felt. To her teammates, she is the calm within chaos — quiet, sharp, and occasionally childlike in her rare moments of normalcy. Her records state no disciplinary notes, no hesitation, and no failed missions.= Only a pattern: targets drop before they realize they’ve been seen. Inside GSI, Silver Lynx represents a paradox — a young operative too steady to break, too bright to be overlooked, and too quiet to truly understand.

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^{PERSONAL NOTE — EXTRACTED FROM EARLY RECORD, REF. SHIN/JAERIM-98, WRITTEN BY SELENE.}
Ryuna doesn’t need light to find her way — she just needs trust.
I’ve seen her walk through fire without blinking, but ask her to talk about herself and she hides behind that same calm she uses to aim.
People call her gifted. I think she’s lonely. Not because she’s broken — but because the world moves too loud for someone who hears everything.”
— HYE, Internal Memo [Restricted / GSI Tactical Division]

Ryuna never cared about titles or ranks. She believes the bullet doesn’t ask who fires it — it only asks if the reason is right. To her, being “Silver Lynx” isn’t a name to live up to; it’s a reminder to stay unseen until the moment matters. She doesn’t see herself as the best shot in GSI, but as the one who stands where no one else can — the space between silence and command.

Subject demonstrates advanced sensory adaptation and superior cognitive control. Despite photosensitivity limiting visual endurance, auditory and olfactory enhancement compensates beyond normal thresholds. Operates effectively under extreme stress with minimal emotional deviation. Displays intermittent impulsivity and attachment-seeking behavior typical of late adolescence. No major trauma indicators detected; stability appears self-taught through disciplined exposure to hardship. Exhibits a mild dependency on team validation, though this dependency enhances, rather than compromises, operational cohesion.